/* ===================== Brand tokens ===================== */
:root{
  --bg:#0a0b0a;
  --surface:#121412;
  --surface-2:#181b18;
  --border:rgba(255,255,255,0.08);
  --border-strong:rgba(255,255,255,0.14);
  --text:#f2f5f2;
  --text-muted:#b7bfb7;
  --accent:#1ed760;
  --accent-2:#1db954;
  --accent-3:#0f8a3d;
  --accent-glow:rgba(30,215,96,0.28);
  --danger:#ff5c5c;
  --warning:#ffb340;
  --grad-brand:linear-gradient(135deg,#1ed760 0%,#1db954 48%,#0f8a3d 100%);

  /* Derived tokens (no raw hex is used anywhere outside this block) */
  --on-accent:#07210f;                     /* label colour on gradient fills */
  --header-bg:rgba(10,11,10,0.82);
  --danger-soft:rgba(255,92,92,0.10);
  --warning-soft:rgba(255,179,64,0.12);
  --accent-soft:rgba(30,215,96,0.10);
  --shadow-lg:0 24px 60px rgba(0,0,0,0.55);
  --shadow-glow:0 10px 30px var(--accent-glow);

  /* Liquid glass tokens (consumed by css/glass.css) */
  --glass-bg:rgba(255,255,255,0.06);
  --glass-bg-strong:rgba(255,255,255,0.10);
  --glass-bg-inner:rgba(255,255,255,0.04);      /* nested items: plain fill, no blur */
  --glass-tint:rgba(6,8,7,0.38);                /* dark base layer that bounds text contrast */
  --glass-border:rgba(255,255,255,0.14);
  --glass-border-hi:rgba(255,255,255,0.46);     /* top-left end of the gradient border */
  --glass-border-lo:rgba(255,255,255,0.04);     /* bottom-right end */
  --glass-blur:24px;
  --glass-saturate:160%;
  --glass-radius-lg:28px;
  --glass-radius-md:18px;
  --glass-radius-sm:12px;
  --glass-shadow:0 10px 40px rgba(0,0,0,0.35);
  --glass-spec:rgba(255,255,255,0.12);          /* specular peak, top-left */
  --glass-spec-tail:rgba(255,255,255,0.03);     /* specular residual under body text */
  --glass-sheen:rgba(255,255,255,0.10);
  --glass-highlight:linear-gradient(135deg,var(--glass-spec) 0%,var(--glass-spec-tail) 40%,rgba(255,255,255,0) 64%);
  --glass-fallback:rgba(20,24,22,0.92);         /* no backdrop-filter support */
  --glass-input-bg:rgba(0,0,0,0.30);
  --glass-grain:0.05;
  --ambient-green:rgba(30,215,96,0.13);
  --ambient-teal:rgba(20,184,166,0.10);
  --ambient-violet:rgba(124,92,214,0.10);

  /* No webfont is fetched: the UI font is whatever the OS already has, with
   * Inter used only when it happens to be installed locally. */
  --font-sans:"Inter","Inter Fallback",system-ui,-apple-system,"Segoe UI",Roboto,Helvetica,Arial,sans-serif;
  --font-mono:ui-monospace,"SF Mono","JetBrains Mono",Menlo,monospace;

  --radius:14px;
  --radius-lg:22px;
  --maxw:1060px;
  --pad:clamp(16px,4vw,28px);
}

/* ===================== Reset & base ===================== */
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;scrollbar-color:var(--accent-2) var(--surface)}
body{
  margin:0;
  background:var(--bg);
  color:var(--text-muted);
  font-family:var(--font-sans);
  font-weight:400;
  font-size:16px;
  line-height:1.65;
  overflow-x:hidden;
  -webkit-font-smoothing:antialiased;
}
img,svg{display:block;max-width:100%}
h1,h2,h3{color:var(--text);font-weight:800;letter-spacing:-0.03em;line-height:1.12;margin:0}
p{margin:0}
a{color:var(--accent);text-decoration:none}
a:hover,a:focus-visible{text-decoration:underline}
button{font:inherit;color:inherit}
::selection{background:var(--accent-glow);color:var(--text)}
::-webkit-scrollbar{width:11px;height:11px}
::-webkit-scrollbar-track{background:var(--surface)}
::-webkit-scrollbar-thumb{background-image:var(--grad-brand);border-radius:99px;border:2px solid var(--bg)}
:focus-visible{outline:2px solid var(--accent);outline-offset:3px;border-radius:6px}

.wrap{width:100%;max-width:var(--maxw);margin-inline:auto;padding-inline:var(--pad)}
.mono{font-family:var(--font-mono);letter-spacing:0.05em;overflow-wrap:anywhere}
.visually-hidden{position:absolute;width:1px;height:1px;margin:-1px;padding:0;overflow:hidden;clip-path:inset(50%);white-space:nowrap}
.skip-link{position:absolute;left:var(--pad);top:-100px;z-index:60;background:var(--surface-2);color:var(--text);
  border:1px solid var(--border-strong);border-radius:10px;padding:10px 14px;transition:top .18s ease}
.skip-link:focus-visible{top:12px}

/* ===================== Brand lockup ===================== */
.mark{width:34px;height:34px;flex:0 0 auto}
.wordmark{font-weight:800;letter-spacing:-0.03em;font-size:1.22rem;color:var(--text);white-space:nowrap}
.wordmark em{
  font-style:normal;
  color:var(--accent);                     /* fallback where clipping is unsupported */
  background-image:var(--grad-brand);
  -webkit-background-clip:text;
  background-clip:text;
}
@supports ((-webkit-background-clip:text) or (background-clip:text)){
  .wordmark em{color:transparent}
}
.lockup{display:flex;align-items:center;gap:11px;min-width:0}

/* ===================== Header ===================== */
.site-header{
  position:sticky;top:0;z-index:40;
  background:var(--header-bg);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  border-bottom:1px solid var(--border);
}
.header-inner{display:flex;align-items:center;justify-content:space-between;gap:14px;min-height:68px}
.header-nav{display:flex;align-items:center;gap:clamp(10px,2.4vw,22px)}
.header-nav a{color:var(--text-muted);font-weight:500;font-size:0.94rem}
.header-nav a:hover,.header-nav a:focus-visible{color:var(--text);text-decoration:none}
@media (max-width:560px){.header-nav .nav-hide{display:none}}

/* Session-aware account control, driven by js/session-nav.js. Both children are
   in the markup; data-state decides which one is painted, so there is no flash
   of the wrong control for a signed-in visitor. */
.nav-account{display:inline-flex;align-items:center;min-height:36px}
.nav-account .nav-account-signin,
.nav-account .nav-account-profile{display:none}
.nav-account[data-state="anon"] .nav-account-signin{display:inline-flex;align-items:center}
.nav-account[data-state="authed"] .nav-account-profile{display:inline-flex;align-items:center;gap:9px}
.nav-account-profile{
  max-width:200px;
  padding:5px 13px 5px 5px;
  border:1px solid var(--border-strong);
  border-radius:999px;
  background:var(--surface-2);
  color:var(--text);
  font-weight:600;
  font-size:0.9rem;
  transition:background .18s ease,border-color .18s ease;
}
.nav-account-profile:hover,
.nav-account-profile:focus-visible{
  background:var(--surface);
  border-color:var(--accent);
  color:var(--text);
  text-decoration:none;
}
.nav-avatar{
  width:26px;height:26px;flex:0 0 auto;
  display:grid;place-items:center;
  border-radius:50%;
  background-image:var(--grad-brand);
  color:var(--on-accent);
  font-size:0.78rem;font-weight:800;line-height:1;
}
.nav-account-name{overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
@media (max-width:560px){
  .nav-account-name{display:none}
  .nav-account-profile{padding:5px}
}
@media (prefers-reduced-motion:reduce){.nav-account-profile{transition:none}}

/* ===================== Hero ===================== */
.hero{position:relative;padding:clamp(48px,9vw,104px) 0 clamp(32px,6vw,56px);text-align:center;overflow:hidden}
.hero::before{
  content:"";position:absolute;inset:-40% 50% auto;width:min(760px,120vw);height:520px;
  transform:translateX(-50%);
  background:radial-gradient(50% 50% at 50% 50%,var(--accent-glow) 0%,transparent 72%);
  opacity:.55;pointer-events:none;
}
.hero > *{position:relative}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  border:1px solid var(--border-strong);background:var(--surface);
  color:var(--text-muted);border-radius:99px;padding:6px 14px;
  font-size:0.82rem;font-weight:500;letter-spacing:0.02em;
}
.dot{width:7px;height:7px;border-radius:50%;background:var(--accent);box-shadow:0 0 0 4px var(--accent-soft)}
h1{font-size:clamp(2.1rem,7vw,4rem);margin:22px auto 0;max-width:16ch}
.hero-sub{margin:18px auto 0;max-width:56ch;font-size:clamp(1rem,2.4vw,1.12rem)}

/* ===================== Redeem card ===================== */
.redeem-card{
  margin:clamp(26px,5vw,38px) auto 0;max-width:620px;text-align:left;
  background:var(--surface);border:1px solid var(--border);border-radius:var(--radius-lg);
  padding:clamp(18px,4vw,26px);box-shadow:var(--shadow-lg);
}
.field-label{display:block;font-size:0.84rem;font-weight:600;color:var(--text);letter-spacing:0.01em;margin-bottom:9px}
.field-row{display:flex;gap:10px;flex-wrap:wrap}
.key-input{
  flex:1 1 220px;min-width:0;width:100%;
  background:var(--bg);color:var(--text);
  border:1px solid var(--border-strong);border-radius:var(--radius);
  padding:14px 16px;font-family:var(--font-mono);font-size:1rem;letter-spacing:0.05em;
  caret-color:var(--accent);transition:border-color .18s ease,box-shadow .18s ease;
}
.key-input::placeholder{color:var(--text-muted);opacity:.75}
.key-input:hover{border-color:var(--accent-3)}
.key-input:focus{outline:none;border-color:var(--accent);box-shadow:0 0 0 3px var(--accent-soft)}
.key-input[aria-invalid="true"]{border-color:var(--danger)}

.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:9px;
  border:1px solid transparent;border-radius:var(--radius);
  padding:14px 20px;font-weight:600;font-size:0.97rem;letter-spacing:-0.01em;
  cursor:pointer;white-space:nowrap;
  transition:transform .16s ease,box-shadow .16s ease,background-color .16s ease,border-color .16s ease,opacity .16s ease;
}
.btn:disabled{opacity:.6;cursor:not-allowed}
.btn-primary{background-image:var(--grad-brand);color:var(--on-accent);flex:0 0 auto}
.btn-primary:hover:not(:disabled),.btn-primary:focus-visible:not(:disabled){transform:translateY(-1px);box-shadow:var(--shadow-glow)}
.btn-primary:active:not(:disabled){transform:translateY(0)}
.btn-ghost{background:var(--surface-2);color:var(--text);border-color:var(--border-strong)}
.btn-ghost:hover:not(:disabled),.btn-ghost:focus-visible:not(:disabled){border-color:var(--accent);color:var(--accent)}
.btn-ghost:active:not(:disabled){transform:translateY(1px)}
.btn-sm{padding:9px 14px;font-size:0.87rem;border-radius:11px}

.spinner{
  width:16px;height:16px;flex:0 0 auto;border-radius:50%;
  border:2px solid var(--on-accent);border-top-color:transparent;
  animation:sr-spin .7s linear infinite;
}
.spinner-accent{border-color:var(--accent);border-top-color:transparent}
@keyframes sr-spin{to{transform:rotate(360deg)}}

.progress{height:3px;border-radius:99px;background:var(--surface-2);overflow:hidden;margin-top:16px}
.progress > span{display:block;height:100%;width:40%;background-image:var(--grad-brand);animation:sr-slide 1.1s ease-in-out infinite}
@keyframes sr-slide{0%{transform:translateX(-100%)}100%{transform:translateX(250%)}}

.form-hint{margin-top:12px;font-size:0.85rem}
.form-hint code{font-family:var(--font-mono);letter-spacing:0.05em;color:var(--text)}

/* ===================== Messages ===================== */
.msg{
  margin-top:16px;border-radius:var(--radius);padding:13px 15px;font-size:0.93rem;
  border:1px solid var(--border);border-left:3px solid var(--danger);
  background:var(--danger-soft);color:var(--text);
}
.msg[hidden]{display:none}

.result{
  margin-top:18px;border:1px solid var(--border-strong);border-radius:var(--radius-lg);
  background:var(--surface-2);padding:clamp(16px,3.4vw,22px);
}
.result[hidden]{display:none}
.result h2{font-size:1.5rem;display:flex;align-items:center;gap:10px}
.result h2 .tick{
  width:26px;height:26px;border-radius:50%;background-image:var(--grad-brand);
  display:inline-grid;place-items:center;color:var(--on-accent);font-size:0.8rem;font-weight:800;flex:0 0 auto;
}
.result-note{margin-top:8px;font-size:0.9rem}
.cred-list{display:grid;gap:10px;margin:18px 0 0;padding:0;list-style:none}
.cred{
  display:flex;align-items:center;gap:12px;flex-wrap:wrap;
  background:var(--bg);border:1px solid var(--border);border-radius:var(--radius);padding:12px 14px;
}
.cred dt{font-size:0.74rem;text-transform:uppercase;letter-spacing:0.09em;color:var(--text-muted);flex:0 0 76px;font-weight:600}
.cred dd{margin:0;flex:1 1 140px;min-width:0;color:var(--text);font-family:var(--font-mono);letter-spacing:0.05em;overflow-wrap:anywhere}
.result-actions{display:flex;gap:10px;flex-wrap:wrap;margin-top:16px}

/* ===================== Badges ===================== */
.badges{display:flex;flex-wrap:wrap;justify-content:center;gap:10px;margin-top:clamp(22px,4vw,30px)}
.badge{
  display:inline-flex;align-items:center;gap:9px;
  background:var(--surface);border:1px solid var(--border);border-radius:99px;
  padding:8px 15px;font-size:0.88rem;font-weight:500;color:var(--text);
}
.badge svg{width:15px;height:15px;color:var(--accent);flex:0 0 auto}

/* ===================== Sections ===================== */
section{padding:clamp(44px,8vw,80px) 0}
.section-head{max-width:60ch;margin-bottom:clamp(20px,4vw,30px)}
.section-head h2{font-size:clamp(1.5rem,4.2vw,2.1rem)}
.section-head p{margin-top:10px}
.section-head.row{display:flex;align-items:flex-end;justify-content:space-between;gap:16px;max-width:none;flex-wrap:wrap}

.grid{display:grid;gap:14px;grid-template-columns:repeat(auto-fit,minmax(min(100%,240px),1fr))}
.card{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius-lg);padding:clamp(16px,3vw,22px)}
.card h3{font-size:1.08rem}
.card p{margin-top:8px;font-size:0.94rem}
.step-n{
  display:inline-grid;place-items:center;width:30px;height:30px;border-radius:10px;
  background-image:var(--grad-brand);color:var(--on-accent);font-weight:800;font-size:0.9rem;margin-bottom:14px;
}

/* stock */
.stock-card{display:flex;align-items:center;justify-content:space-between;gap:14px;flex-wrap:wrap}
.stock-card h3{font-size:1rem;letter-spacing:-0.02em}
.pill{
  border-radius:99px;padding:5px 12px;font-size:0.8rem;font-weight:600;white-space:nowrap;
  background:var(--accent-soft);color:var(--accent);border:1px solid var(--border);
}
.pill.out{background:var(--warning-soft);color:var(--warning)}

.skeleton{border:1px solid var(--border);border-radius:var(--radius-lg);padding:22px;background:var(--surface)}
.skeleton-bar{
  height:13px;border-radius:99px;
  background:linear-gradient(90deg,var(--surface-2) 0%,var(--border-strong) 50%,var(--surface-2) 100%);
  background-size:200% 100%;animation:sr-shimmer 1.4s ease-in-out infinite;
}
.skeleton-bar + .skeleton-bar{margin-top:11px}
.skeleton-bar.w60{width:60%}
.skeleton-bar.w35{width:35%}
@keyframes sr-shimmer{0%{background-position:150% 0}100%{background-position:-50% 0}}

.empty{
  text-align:center;border:1px dashed var(--border-strong);border-radius:var(--radius-lg);
  padding:clamp(26px,5vw,42px);background:var(--surface);
}
.empty .mark{width:44px;height:44px;margin:0 auto 14px;opacity:.9}
.empty h3{font-size:1.1rem}
.empty p{margin-top:8px;font-size:0.94rem;max-width:44ch;margin-inline:auto}

.banner{
  display:flex;align-items:center;justify-content:space-between;gap:14px;flex-wrap:wrap;
  background:var(--danger-soft);border:1px solid var(--border);border-left:3px solid var(--danger);
  border-radius:var(--radius);padding:14px 16px;color:var(--text);font-size:0.93rem;
}

/* faq */
.faq{display:grid;gap:10px}
details{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);overflow:hidden}
details[open]{border-color:var(--border-strong)}
summary{
  display:flex;align-items:center;justify-content:space-between;gap:14px;
  cursor:pointer;list-style:none;padding:16px 18px;
  color:var(--text);font-weight:600;font-size:0.99rem;letter-spacing:-0.01em;
  transition:color .16s ease;
}
summary::-webkit-details-marker{display:none}
summary:hover,summary:focus-visible{color:var(--accent)}
summary::after{content:"+";font-family:var(--font-mono);font-size:1.15rem;color:var(--accent);flex:0 0 auto;transition:transform .18s ease}
details[open] summary::after{content:"–"}
details > div{padding:0 18px 18px;font-size:0.94rem}

/* ===================== Footer ===================== */
.site-footer{border-top:1px solid var(--border);padding:clamp(30px,6vw,48px) 0;background:var(--surface)}
.footer-top{display:flex;align-items:flex-start;justify-content:space-between;gap:20px;flex-wrap:wrap}
.footer-links{display:flex;gap:18px;flex-wrap:wrap}
.footer-links a{color:var(--text-muted);font-size:0.92rem;font-weight:500}
.footer-links a:hover,.footer-links a:focus-visible{color:var(--accent);text-decoration:none}
.footer-meta{margin-top:22px;padding-top:18px;border-top:1px solid var(--border);display:grid;gap:8px}
.footer-meta p{font-size:0.84rem}
.disclaimer{color:var(--text-muted);max-width:92ch}

/* ===================== Toast ===================== */
.toast-stack{
  position:fixed;z-index:70;left:var(--pad);right:var(--pad);bottom:18px;
  display:grid;gap:10px;justify-items:center;pointer-events:none;
}
.toast{
  pointer-events:auto;max-width:420px;width:100%;
  background:var(--surface-2);color:var(--text);
  border:1px solid var(--border-strong);border-left:3px solid var(--accent);
  border-radius:var(--radius);padding:12px 15px;font-size:0.92rem;
  box-shadow:var(--shadow-lg);
  display:flex;align-items:center;gap:10px;
  animation:sr-toast-in .22s ease-out;
}
.toast svg{width:16px;height:16px;color:var(--accent);flex:0 0 auto}
.toast.leaving{animation:sr-toast-out .2s ease-in forwards}
@keyframes sr-toast-in{from{opacity:0;transform:translateY(10px)}to{opacity:1;transform:translateY(0)}}
@keyframes sr-toast-out{to{opacity:0;transform:translateY(8px)}}
@media (min-width:640px){.toast-stack{left:auto;right:24px;bottom:24px;justify-items:end}}

/* ===================== Motion guard ===================== */
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  *,*::before,*::after{
    animation-duration:.001ms !important;
    animation-iteration-count:1 !important;
    transition-duration:.001ms !important;
  }
  .btn-primary:hover:not(:disabled){transform:none}
}

/* ===================== Narrow screens (down to 320px) ===================== */
@media (max-width:420px){
  .field-row{flex-direction:column}
  .btn-primary{width:100%}
  .cred dt{flex:0 0 100%}
  .result-actions .btn{flex:1 1 100%}
}